Syndactyly is a characteristic of Apert syndrome, Poland syndrome, Jarcho-Levin syndrome, oral-facial-digital syndrome, Pfeiffer syndrome, and Edwards syndrome

Stockholm syndrome.

The Koro syndrome is a culture-specific syndrome. The individual with Koro syndrome has an overpowering belief that his or her genitals are retracting and disappearing.

Syndactyly is a characteristic of Apert syndrome, Poland syndrome, Jarcho-Levin syndrome, oral-facial-digital syndrome, Pfeiffer syndrome, and Edwards syndrome.

XXXY Syndrome and Barr-Shaver-Carr Syndrome are the same.